cable railway vs railway

cable railway and railway both are nouns.

Word	Noun	Adjective	Verb	Adverb
cable railway	Yes	No	No	No
railway	Yes	No	No	No

As nouns, railway is a hypernym of cable railway; that is, railway is a word with a broader meaning than cable railway:

cable railway: a railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars
railway: line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight

Other hypernyms of cable railway include railroad, railroad line, railway line, railway system.

cable railway (noun)	railway (noun)
a railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars	line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight
	a line of track providing a runway for wheels